Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v3.22.4
Summary of Significant Accounting Policies - Additional Information (Detail)
 1 Months Ended 12 Months Ended
Dec. 31, 2022
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Nov. 30, 2022
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Sep. 30, 2022
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Aug. 31, 2022
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Dec. 31, 2022
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Dec. 31, 2021
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Dec. 31, 2020
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Jul. 29, 2021
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Jun. 26, 2013
Summary Of Significant Accounting Policies [Line Items]                  
Number of operating segment | Segment         1        
Cash equivalents, maximum maturity period         90 days        
Equity method investments, unrealized intercompany profit (loss) not eliminated amount         $ 0        
Number of reporting unit | Unit         1 1      
Impairment charges on goodwill         $ 0 $ 0 $ 0    
Treasury stock, aggregate price         $ 9,295,000 512,000      
ASU 2016-13                  
Summary Of Significant Accounting Policies [Line Items]                  
Change in accounting principle, accounting standards update, adoption date Jan. 01, 2020       Jan. 01, 2020        
Change in accounting principle, accounting standards update, Adopted true       true        
Change in accounting principle, accounting standards update, Immaterial Effect true       true        
ASU 2018-15                  
Summary Of Significant Accounting Policies [Line Items]                  
Change in accounting principle, accounting standards update, adoption date Jan. 01, 2020       Jan. 01, 2020        
Change in accounting principle, accounting standards update, Adopted true       true        
Change in accounting principle, accounting standards update, Immaterial Effect true       true        
ASU 2020-04                  
Summary Of Significant Accounting Policies [Line Items]                  
Change in accounting principle, accounting standards update, adoption date Mar. 12, 2020       Mar. 12, 2020        
Change in accounting principle, accounting standards update, Adopted true       true        
Change in accounting principle, accounting standards update, Immaterial Effect true       true        
Equity or Balanced Portfolios                  
Summary Of Significant Accounting Policies [Line Items]                  
Percentage of asset management fee on threshold limit         1.00%        
Asset under management, threshold limit $ 10,000,000       $ 10,000,000        
Percentage of asset management fee on balance         0.60%        
Fixed Income Portfolios                  
Summary Of Significant Accounting Policies [Line Items]                  
Percentage of asset management fee on threshold limit         0.40%        
Asset under management, threshold limit 10,000,000       $ 10,000,000        
Percentage of asset management fee on balance         0.30%        
Cortina Equity Portfolios                  
Summary Of Significant Accounting Policies [Line Items]                  
Percentage of asset management fee on balance         0.80%        
Percentage of asset management fee on first threshold limit         1.00%        
Asset under management, first threshold limit 25,000,000       $ 25,000,000        
Percentage of asset management fee on second threshold limit         0.90%        
Asset under management, second threshold limit 25,000,000       $ 25,000,000        
Municipal Value Strategy                  
Summary Of Significant Accounting Policies [Line Items]                  
Percentage of income from asset management fee         0.65%        
Outsourced Chief Investment Officer Portfolios                  
Summary Of Significant Accounting Policies [Line Items]                  
Percentage of asset management fee on balance         0.24%        
Percentage of asset management fee on first threshold limit         0.40%        
Asset under management, first threshold limit 50,000,000       $ 50,000,000        
Percentage of asset management fee on second threshold limit         0.32%        
Asset under management, second threshold limit $ 50,000,000       $ 50,000,000        
Minimum                  
Summary Of Significant Accounting Policies [Line Items]                  
Identifiable finite-lived intangible assets, useful life         3 years        
Minimum | Private Funds                  
Summary Of Significant Accounting Policies [Line Items]                  
Prior written notice period to terminate investment management agreements         30 days        
Prior written notice period after receiving the affirmative vote, to terminate investment management agreements         60 days        
Percentage of income from asset management fee         0.25%        
Minimum | Non-discretionary Assets                  
Summary Of Significant Accounting Policies [Line Items]                  
Percentage of income from asset management fee         0.05%        
Maximum                  
Summary Of Significant Accounting Policies [Line Items]                  
Identifiable finite-lived intangible assets, useful life         20 years        
Maximum | Private Funds                  
Summary Of Significant Accounting Policies [Line Items]                  
Prior written notice period to terminate investment management agreements         90 days        
Prior written notice period after receiving the affirmative vote, to terminate investment management agreements         90 days        
Percentage of income from asset management fee         1.50%        
Maximum | Non-discretionary Assets                  
Summary Of Significant Accounting Policies [Line Items]                  
Percentage of income from asset management fee         0.01%        
Leasehold Improvements                  
Summary Of Significant Accounting Policies [Line Items]                  
Property, plant and equipment, useful life         10 years        
Other Fixed Assets | Minimum                  
Summary Of Significant Accounting Policies [Line Items]                  
Property, plant and equipment, useful life         3 years        
Other Fixed Assets | Maximum                  
Summary Of Significant Accounting Policies [Line Items]                  
Property, plant and equipment, useful life         7 years        
Equity Method Investments                  
Summary Of Significant Accounting Policies [Line Items]                  
Impairment charges related to equity method investments         $ 0 $ 0 $ 0    
Class A Common Stock                  
Summary Of Significant Accounting Policies [Line Items]                  
Treasury stock, purchased | shares 133,190 57,000 136,930 148,579 508,782 33,083      
Treasury stock, aggregate price         $ 8,783,000 $ 512,000      
Common stock, voting rights         one vote for each share        
Class A Common Stock | Maximum                  
Summary Of Significant Accounting Policies [Line Items]                  
Stock repurchase program, authorized amount               $ 15,000,000  
Class B Common Stock                  
Summary Of Significant Accounting Policies [Line Items]                  
Common stock, voting rights         one vote for each share        
Class of share exchangeable to another class         one-for-one basis        
Silvercrest L.P | Class A Common Stock                  
Summary Of Significant Accounting Policies [Line Items]                  
Ownership percentage in a subsidiary 66.80%       66.80% 67.50%     67.40%